NJU39612 Datasheet, PDF (1/11 Pages) New Japan Radio – MICROSTEPPING MOTOR CONTROLLER WITH DUAL DAC

NJU39612
MICROSTEPPING MOTOR CONTROLLER WITH DUAL DAC
s GENERAL DESCRIPTION
NJU39612 is a dual 7-bit+sign; Digital-to-Analog Converter
(DAC) developed to be used in micro stepping applications
together with the dual stepper motor driver. The NJU39612
has a set of input registers connected to an 8-bit data port for
easy interfacing directly to a microprocessor. Two registers
are used to store the data for each seven-bit DAC, the eighth
bit being a sign bit (sign/magnitude coding).
s PACKAGE OUTLINE
NJU39612E2
s FEATURES
• Analog control voltages from 3V down to 0.0V
• High-speed microprocessor interface
• Full -scale error
±1 LSB
• Fast conversion speed 3 µs
• Matches the dual stepper motor drivers
• Package EMP20
s BLOCK DIAGRAM
WR
CS
A0
D7 - D0
RESET
E1
E2
POR
V_DD
V_Ref
NJU39612
Sign ₁
DA- Data 1
E
C
D
R
D/A
DA ₁
DA- Data 2
E
C
D
R
R
Vss
D/A
DA ₂
Sign ₂
Figure 1. Block Diagram